Zahler BoneFactor Zahler BoneFactor supports bone strength and maintains bone health and density. Is a synergistic nutritional blend of advanced calcium sourced from Aquamin. This formula includes strontium, magnesium, vitamin K and other elemental nutrients. It has been formulated expressly to help maintain bone health and to preserve bone mass and density. As a person ages, the rate of new bone cell growth slows down, but the rate of deterioration of bone cells will stay the same or accelerate slightly. That means that at a certain point in life, one's bones are steadily decreasing in density and becoming thinner. Besides containing Aquamin, an advanced source of Calcium, Zahler's BoneFactor also includes elements such as Strontium and Silica, elements that help the bones continue to grow and become stronger. Recommended Use: Take 4 tablets divided between two meals, or as directed by a healthcare professional.